Metallic door construction



1962 A. J. MUSSELMAN METALLIC DOOR CONSTRUCTION Filed Sept. 15, 1960 INVENT0R.\ 22 ANDREW J.MU5SELMAN,

3,tl7il,19'7 METALHC BGUR QDNSTRUCTEON Andrew .l. Musseirnan, 17M Coral Gardens Drive, Fort Lauderdale, Fla. Filed Sept. 15, 1969, Ser. No. 56,205 Y 3 (Ilaims. (Cl. 189-46) This invention relates to metallic door structures wherein the elements constituting the inner and outer faces of the door are formed in two substantially similar extrusions to be initially secured together to form a hollow metallic door frame having parallel jamb members and parallel header and sill members, all being formed of similar extrusions.

The invention contemplates a metallic door wherein a metallic channel extrusion is assembled to form a generally rectangular frame that constitutes an inner side of the door and a similar metallic frame assembled to constitute the outer side of the'door and with the two frames having telescopic engagement with each other to form a generally rectangular rigid frame of hollow construction. The door of the present invention is an improvement over my United States Letters Patent No. 2,877,876, issued March 17, 1959.

Novel features of construction and operation of the device will be more clearly apparent during the course of the following description, reference being bad to the accompanying drawings wherein has been illustrated a preferred form of the device and wherein like characters of reference are employed to denote like parts throughout the several figures.

In the drawings:

FIGURE 1 is a perspective view of an assembled door in accordance with the invention,

FlGURE 2 is a composite perspective view of a pair of telescopic channel members constituting the inner and outer sides of the door and in separated relation, and

FIGURE 3 is an enlarged transverse sectional view taken substantially on line 3-3 of FIGURE 1.

Referring specifically to the drawings, the numeral 5 designates the door as a whole, including stiles 6, a head rail 7 and a sill rail 3. The several members constituting the stiles, the header and the sill are substantially identical extrusions and with the several rails being mitered at the end portions for engagement with each other as indicated at 9. With the construction shown, the frame for the outer side of the door is indicated at it), while the frame constituting the inner side of the door is indicated generally at 11. The several frame members constituting each side of the door are assembled and welded together along the miter line 5 upon the inside of the frame, thus permitting of a relatively strong weld joint upon the inner side of the frames that will avoid any rough joint that is exposed to view.

Each of the frames is formed of extruded channel members and with the outer frame embodying a flat plate 12., having marginal edges 13. The plate 12, inwardly from the marginal edges 13, is provided with right angled flanges 14, the marginal edges of which are beveled at 15. The flanges 14 at their point of connection with the plate 12 are shouldered at 16 and the shoulder is inwardly and upwardly beveled at 17, at an angle substantially identical to the bevel 15. The outer faces of the flanges 14 are corrugated at 13, for a purpose to be presently described.

The members 11 constituting the inner frame member are provided with the marginal edges 19. inwardly from the marginal edges 19, the plate 11 is provided with right angle upstandin flan es 29, the marginal edges of which are beveled at 21. The flanges 26 at their point of connection with the plate 11 are shouldered at 22 and the shoulder is downwardly and inwardly beveled at 23. The inner faces of the flanges 20 are longitudinally corrugated at 24, similar to the corrugations if. The flanges 24? are spaced apart a distance capable of permitting a telescopic engagement with the flanges 1d at assembly or" the door whereby, the bevels 21 of the flanges 24 have a camming engagement with the bevels 17 of the shoulder 16 while the bevels 15 of the flanges 14 have a camming engagement with the bevels 23 of the flanges 20 thus, during the assembly of the door, the flanges are forced into relatively tight engagement with each other. The several channel members it and 11 are extruded from a suitable material, such as aluminum and at assembly constitutes a very rigid hollow door construction.

In the assembly of the device, the several extrusions constituting the outer face of the door are cut to the required length to form the stiles 6, the header 7 and the sill 8 and the members at their ends are beveled at 9 and welded together upon their inner sides thus, forming a relatively rigid open frame that constitutes the outer side of the door. The inner side of the door is formed of similar extrusions and assembled in the same manner, with the weld being made at the mitered ends of the stiles, the header and the sill to thus form a rigid open frame, being each one-half of the door to be constructed. After the frames it and ill have been separately assembled, the corrugations i8 and 24 are coated with epoxy resin and then the frame 1% or the frame 11, as the case may be, is engaged in telescopic relation, with the flanges 2t} overlying the outer sides of the flanges l4 and, when firmly pressed together, the flanges ill will be pressed into firm engagement with the flanges 14 by the engagement of the bevels 21 upon the bevels 17, while the bevels 15 earn upon the bevels 23 to force the flanges 14 into firm engagement with the flanges 20. The corrugations 18 and 24 have their apexes in engagement, forming relatively small channels 25 that support a body of the resin to securely unite the flanges 14- and 20 together against displacement. The epoxy resin is well known for its bonding qualities and, while the epoxy resin may be adequate to securely unite the channel members fit and 11 in their telescopic relation, it may be found desirable with relatively heavy doors that rivets or the like be passed through the flanges to additionally bond them together.

it will be apparent from the foregoing that a very novel form of door construction has been provided. The channels ill and 11 are substantially identical with the exception that the flanges 2% have the corrugations 24 upon their inner sides while the flanges 14 have the corrugations upon their outer sides. The spacing of the shoulders 16 and 2?. are equidistantly spaced from the marginal edges 13 and 19. The construction provides a very novel form of door that permits of the rigid assembly of an outer frame member and a rigid assembly of an inner frame and with the frame members being united together by the telescopic engagement of the flanges l4 and 2d, coupled with the epoxy coated corrugations and the foreing of the flanges toward each other by the bevels l5, 17, 21 and 23. Also, the construction of the door permits of the welding of the abutting ends of the frame members whereby to avoid any unsi htly weld joints upon the outer faces of the frame members. The structure is simple, exceptionally strong, is quickly and easily assembled from relatively simple extrusions and forms a door frame that is rigidly held against sagging or twisting. The flanges 14 and 2% will obviously be dimensioned in accordance with the thickness of the door to be constructed.

It is to be understood that the invention is not limited to the p ecise construction shown, but that chan es are contemplated as readily fall within the spirit of the invention as shall be determined by the scope of the subjoined claims.

Having described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A metallic door made up of a plurality of rails con prising a pair of parallel stiles, a header and a sill, the said rails being substantially identical in cross-section, each of said rails comprising a front outer main channel section and a rear inner closure channel section, said front channel section being of U-shape in cross-section comprising an outer front wfll and a pair of inwardly directed flanges lying substantially perpendicular to said front wall and adjacent the outer edges thereof, the said rear channel section likewise being of U-shape in cross-section, and comprising an inner rear wall and a pair of flanges lying perpendicular to said rear wall, said last named flanges being so spaced from each other as to enter and telescope in juxtaposed relation between the flanges of the front channel section, said flanges being of substantially the same length and maintaining said walls in spaced parallel relation, and mating camming edge-and-groove rneans formed upon adjacent pairs of the juxtaposed flanges at their marginal edges and at their base portions and forcing confronting surfaces of said adjacent pairs of flanges toward contacting engagement throughout their length when the two channel sections are telescoped.

2. The structure according to claim 1 wherein the marginal edges of each flange are beveled and with each of the flanges at their base portions being shouldered and with the shoulders being provided with bevel grooves, said grooves comprising one side portion of an adjacent flange 4- and a surface substantially parallel to the bevel on the marginal edge of an adjacent flange whereby the flanges when shifted together cause the bevel edge of each flange to earn into the groove of the shoulder to move the flanges forcibly toward each other.

3. The structure according to claim 1 wherein the confronting surfaces of each of said pairs of adjacent flanges including a plurality of spaced parallel V-shaped grooves, apex portions of the grooves on the pairs of flanges being in alignment, and mastic disposed in opposed groove preventing separation of said telescoped flanges longitudinally serrated for their full length and the flanges of the inner section upon their inner faces are longitudinally serrated for their full length, the serrations embodying a plurality of relatively shallow V-shaped grooves and with the serrations of the several flanges having mating engagement where the apex of each serration is in alignment to form a plurality of grooves for the reception of a bonding cement.

References Cited in the file of this patent UNITED STATES PATENTS 177,432 Smith May 16, 1876 1,098,974 Reilly June 2, 1914 2,736,930 Longley Mar. 6, 1956 2,877,876 Musselrnan Mar. 17, 1959 FOREIGN PATENTS 780,762 France Feb. 4, 1935 

